Published in 1976
It was concluded that the electrical resistivity test was not ideally suitable as an inspection tool, but was the only currently available nondestructive test for determining the effectiveness of a waterproof membrane system. Considerable judgment and care were needed to properly conduct the test and interpret its results, but experience in a project on Route 495 showed the procedure to be workable and of help in controlling installation of the membrane system.
Last updated: January 29, 2024